Pet cats on Korean Air
 

Would anyone know the underseat dimensions (particularly the height) of the B737-900 and A380 economy seats? I am trying to get this info from KE but they only will give the total dimension (115cms). They allow pet cats to travel onboard (in hard or soft carriers) and I only have access to a hard carrier, and want to make sure the height of the one I have will fit. Thanks for any help!